Road-grading machine



June 5, E923.

C. K. STOCKLAND ROAD GRADING MACHINE Jun@ 5, 1923. 11,457,362 C. K.STOCKLAND ROAD GRADI NG MACHINE Filed Oct. 17, 1921 3 Sheets-Sheet 2Hav-Z 27V VE/v TOR: CHA Ruis h. SToc/fLAA/D A T'ToR/vg 'ya June '5,11923. 1,457,862'

C.K.STOCKLAND ROAD GRADING MACHINE Filed oct, 17, 1921 3 Sheets-Sheet 3I/vvE/v TOR: CHA RLES hi SToc/f'LA NQ.

@Y amo/MM Patente-d .lune 5, i923.

unirse stares garant orties.,

ROD-GRADING MACHINE.

Application filed October 17,1921. Serial No. 508,067.

To all whom it may concern n Be it known that I, CHARLES K. STOCK- LAND,a citizen of the United States, residing at Minneapolis, in the countyof Hennepin and State of Minnesota, have invented cer tain new anduseful Improvements in Road- Grading Machines, of which the followingisv a specification.

My invention relates to road grading machines. An object is to providean auxiliary blade for attachment to the main scraper blade of suchmachines, so as to operate in connection therewith. Another object is toprovide for so mounting the auxiliary blade le that it may be adjustedboth vertically and horizontally with relation to the main blade and maybe readily attached to either end thereof. Another object is to providean auxiliary blade in combination with the 2o main blade of a standardroad grading machine in which the main blade having the auxiliary bladesecured thereto is carried by a wheel-supportedvframe, and is adapted tobe raised and lowered and to be reversed in .25 position to operateeither right or left as desired. Y

The full objects and advantages of my invention will appear inconnection with the l detailed description, and the novel featuresembodied in my inventive idea will be particularly pointed out intheclaims.

In the accompanying drawings which illustrate the application' of myinvention in one form,-

Fig. l is a fragmentary view in perspective showing my auxiliary bladeattached to the main blade, raised position of the auxiliary blade beingshown in full lines and horizontal position being shown'in dotted eolines. `F ig. 2 is a rear elevational view of the auxiliary blade. Fig.3 is a view in section on the line 3-3 of Fig. 1. Fig. 4 is a view insection on the line 4'-4 of Fig. 3.

Fig. 5 is a sectional elevational view of one e5 of the supportingmembers of the auxiliary blade. Fig. 6 is a plan view of a road gradingmachine to which my invention is adapted to be applied. Fig. 7 is afragmentary sectional elevational view taken transversely 5o of themachine. Fig. 8 is a detail view in section on the line 8-8 of Fig. 6.

Referring to the construction shown in the drawings, a front truckmember 15 is mounted upon wheels 16 and a rear truck e5 member 17 ismounted on wheels 18, said rear member including a platform 19. The

front and` rear truck members are connectedy by longitudinal beams 22and 23 which constitute part of the frame of the machine. At each sideof the rear truck member, uprights 28 extend upwardly and are connectedby cross bar 29. These uprights serve to support hand wheels and wormgearing for operating the scraper blade as will be described later. Th'escraper blade 30 is carried by supporting bars 3l 'toward eachy end ofthe blade and these supporting bars are connected to a ring member 32.The'member 32 and the blade'30 are also connected by brace rods 33 and34. The ring member 32 is constructed as best shown in section in F 8with horizontal and vertical ange portions, there being Ateeth 35 on thelower face of the horizontal iiange to form an an nular rack whichisengaged by a pinion r36 secured to the forward end of a'v rod 37rotatively mounted on the machine frame and having a hand wheel 38secured to the rear end thereof. The ring member-32 is supported bymeans of the horizontal flange thereof engaging grooves in the castings39,

40 "and 4-:1 which are secured to bars 42 and 43 which converge towardthek front of the machine and are attached to the front truck. It isevident that by turning thehand `wheel 38 the inclination of the scraperbladeis varied and may be reversed either right or left. Arms 44 and 45extend out from the bars 42 and 43 and these arms'are connected by meansof links 46 and 47 with crank arms 48 kand 49 on the forward' ends ofrods 50 andv51 which arerotatively supported by means of uprights on theframe such as the uprights 28. Secured to the rods 50 and 51 are wormgears 52 and 53 which are engaged by worms suchvas the worm 54 shown inFig. 7 mounted on short shafts 55 to which hand wheels 56 and 57 aresecured. If both hand wheels are operated simultaneously, the scraperblade will be lifted or lowered bodily. Upon operating one or the otherVof the hand wheels, the scraper blade may be raised or lowered at oneendonly. @n ac count of the worm gearing, thesev operations are necessarilyquiteslow. When it is desired to quickly lift the scraper blade, as forinstance, when it is desired to avoid a rock or stump, this may be doneby operat ing a lever 58. As shown in Fig. 7, -this lever is secured toa shaft 59 having arms which'are connected by links 60 with arcshapedmembers 61 slidable in arc-shaped .a clamping member, means for securingsaid auxiliary blade to saidlamping member, a lug on said clampingmember adapted to engage the front surface of the main blade at one endthereof, the surfaces of said lug and the body portion of the clampingmember which face each other being bowed away from each other to permitrocking movement of said clamping member on the main blade, and screwbolts carried by the upper and lower portions of said clamping memberior engagement with the rear surface of the main blade wherebyadjustment of said screw bolts causes the inclination of said auxiliaryblade to be varied.

3. In combination with the main blade of a road grading machine, anauxiliary blade, teeth near one end of said blade, a plate, teeth onsaid plate with which said lirst mentioned teeth are adapted to engage,means for adjustably holding said teeth in engagement with each other, aclamping member, means for securing said plate to said clamping member,and means for adjustably securing said clamping member to one end of themain blade.

4. In combination with the main blade of a road grading machine, anauxiliary blade, a plate, means for securingsaid auxiliary blade to saidplate, horizontal ears carried by said plate, a plurality of teeth onsaid ears, a clamping member, horizontal ears carried by said clampingmember, teeth n said last mentioned ears with which said plurality ofteeth are adapted to engage, means for adjustably holding said sets ofteeth in engagement with each other, and means for securing saidclamping member to an end of the main blade.

5, In combination with the main blade of a road grading machine, anauxiliary blade, teeth near one end of said blade, a plate, teeth onsaid plate with which said first mentioned teeth are adapted to engage,means for adjustably holding said teeth in engagement with each other,horizontal ears carried by said plate, a plurality of teeth on Saidears, a clamping member, horizontal. ears carried by said clampingmember, teeth on said last mentioned ears with which said plurality ofteeth are adapted to engage, means for adjustablyholding said lastmentioned sets of teeth in engagement with each other, and means forsecuring said clamping member to an end of said main blade.

ln testimony whereo'l hereunto aix my signature.

CHARLES K. STOCKLAN D.

